<!DOCTYPE>
<html>
<head>
<title>javascript url</title>
</head>

<body>
	<a href='javascript:
		var e="",r="";
		do{
			e = prompt("Expression: " + e + "\n" + r + "\n",e);
			try{r = "Result: " + eval(e);}
			catch(ex){r = ex;}
		}while(e);
		void 0;
	'>JavaScript Evaluator</a>
</body>

</html>